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Mini Merlin Installation, Operation & Maintenance
Mini Merlin CH4CO
v2-TX
Dual Gas Detector
Installation, Operation & Maintenance Manual
Please read this manual carefully and retain for future use.
For specific requirements that may deviate from the information in this guide – contact your supplier.
American Gas Safety LLC
www.americangassafety.com
Rev: 03 05-22
1
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Summary of Contents for AGS Mini Merlin CH4CO v2-TX
- Page 1 Mini Merlin Installation, Operation & Maintenance Mini Merlin CH4CO v2-TX Dual Gas Detector Installation, Operation & Maintenance Manual Please read this manual carefully and retain for future use. For specific requirements that may deviate from the information in this guide – contact your supplier. American Gas Safety LLC www.americangassafety.com Rev: 03 05-22...
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Page 2: Table Of Contents
Mini Merlin Installation, Operation & Maintenance Contents Safety Information ..................3 Carbon Monoxide – General Information ..............4 Methane – General Information ................. 4 Installation ....................5 Typical Application & Location .................. 5 Mounting & Cabling ....................6 Circuit Board Overview ..................... 7 Wiring –... -
Page 3: Safety Information
At the end of their working life, electrochemical sensors should be disposed of in an environmentally safe manner. Alternatively, they can be securely packaged and returned to AGS clearly marked for disposal. Electrochemical sensors should not be incinerated as this may cause the cell to emit toxic fumes. -
Page 4: Carbon Monoxide - General Information
In simplified terms, a level of 8% LEL or less on this device is generally considered safe and acceptable. For more information, please visit our website or contact your local AGS distributor. Rev: 03 05-22... -
Page 5: Installation
Mini Merlin Installation, Operation & Maintenance Installation Typical Application & Location Installation must be in accordance with the recognised standards of the appropriate authority in the country concerned! Access to the interior of the device, when carrying out any work, must only be conducted by trained personnel! Before carrying out any work ensure local regulations and site procedures are followed! Easy access is recommended for both status observation and alarm purposes and must be located out of reach of the public! Isolate the equipment from all hazardous live power sources before opening the cover! -
Page 6: Mounting & Cabling
Mini Merlin Installation, Operation & Maintenance Mounting & Cabling If mounting direct to wall - ensure the wall surface is flat to prevent base distortion! Ensure the rear base is installed in the correct orientation as shown! Where cable glands/conduits are used for wire entry, use 20mm (3/4 inch) max separated by at least 20mm! Any parts that form part of the connections/installation must have a minimum fire retardant rating of UL94V-1! Damage to PCBs when creating cable entry points or attempting to remove the circuit board may void any warranty! The monitor is designed for either surface mounting or mounted on a one or two gang electrical box. -
Page 7: Circuit Board Overview
Mini Merlin Installation, Operation & Maintenance Circuit Board Overview Damage to PCBs when creating cable entry points may void any warranty! Take care when making connections to high voltage connectors! Any damage attempting to remove the circuit board may void any warranty! All Class 2 wiring is to be installed within flexible tubing to maintain segregation between circuits! Wiring of different circuits shall be separated by means of routing, clamping or barrier! For field connections other than connected Heat detectors use wires suitable for at least 167°F (75°C) -
Page 8: Wiring - Appliance Limit Circuits
Mini Merlin Installation, Operation & Maintenance Wiring – Appliance Limit Circuits The device can be used to directly shut down a gas appliance when a fault condition is detected (gas leak) by wiring terminals of one BMS into the low voltage safety limit circuit of the appliance. To connect both BMS to the safety limit circuit of an appliance - wire in series. -
Page 9: Wiring - Pilot Water Heater & Boiler Limit Breaker
Mini Merlin Installation, Operation & Maintenance Wiring – Pilot Water Heater & Boiler Limit Breaker The device can be used to directly shut the pilot of a water heater in an alarm or power failure state using a product from Field Controls. The BMS terminals may also be used to connect to a home alarm system. Wiring –... -
Page 10: Building Management System
Mini Merlin Installation, Operation & Maintenance Building Management System This device can be integrated with a Building Management System (BMS), a home alarm system, or be used as part of a boiler low voltage safety limit to make or break a circuit on both gases separately, (valve open or valve closed) depending on the system. -
Page 11: Alarm Reset
Mini Merlin Installation, Operation & Maintenance Alarm Reset To reset after an alarm - press the touch sensor once. If the device enters an alarm state at any time, the gas level indicator will remain red to alert the user that a high/dangerous level of gas has been detected, until the device is reset. -
Page 12: Maintenance
What do I need? Contact your AGS representative for details of suitable bump testing kits and gases. Kits usually consist of a certified gas cylinder or spray. We recommend only using AGS calibration gas kits to ensure correct flow rates meet AGS technical requirements. -
Page 13: Bump Test Procedure
Mini Merlin Installation, Operation & Maintenance Bump Test Procedure To increase reaction time, cover the escape vents at the sides of the device. Always remove the regulator/valve if using a cylinder after use! Always give at least five (5) minutes between testing the same unit or until gas has fully dispersed! Always consider safety and use equipment in accordance with Safety Data Sheets! Reference should always be given to any applicable national &... -
Page 14: Test Record
Mini Merlin Installation, Operation & Maintenance Test Record Detectors are pre-calibrated prior to shipping with gas mixtures prepared to N.P.L standards (analytical tolerance: ±5%) Date Gas Details Pass Sign CO ppm: /NG % LEL: Batch/Cylinder No: Batch/Cylinder No: CO ppm: /NG % LEL: Batch/Cylinder No: Batch/Cylinder No:... -
Page 15: Specification
Mini Merlin Installation, Operation & Maintenance Specification General Model: Mini Merlin CH4CO v2 FL Target Gases: Methane/Natural Gas & Carbon Monoxide Size: (H x W x D) 5.95 x 4.37 x 1.97” (151 x 111 x 50mm) Housing Material: ABS PA765 (Flame Rating UL94 V-1) Mounting: Safe Zone - Indoor use - Wall Mounted Weight:... - Page 16 Every effort is made to ensure the accuracy of this document; however, AGS can assume no responsibility for any errors or omissions in this document or their consequences. AGS would greatly appreciate being informed of any errors or omissions that may be found in the content of this document.
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